Amentum's AI Data Center Project at Savannah River Site: A Phased Approach to Nuclear Energy Integration
Finance

Amentum's AI Data Center Project at Savannah River Site: A Phased Approach to Nuclear Energy Integration

authorBy Mariana Mazzucato
DateJul 27, 2026
Read time2 min

Amentum has embarked on an ambitious project at the Savannah River Site, aiming to establish a substantial AI data center supported by a hybrid energy generation system. This initiative, selected by the U.S. Department of Energy's National Nuclear Security Administration (DOE/NNSA), involves a phased approach, initially leveraging natural gas for power, while concurrently laying the groundwork for future advanced nuclear energy integration. This strategic decision addresses the inherent timeline disparities between the rapid deployment needs of data centers and the longer development cycles of nuclear reactors.

The core of Amentum's proposal at the Savannah River Site includes a 1 gigawatt (GW) AI data center coupled with approximately 2 GW of on-site energy production. The project's phased implementation is crucial for mitigating risks and ensuring continuous power supply. Natural gas will serve as the immediate energy source, enabling the data center to become operational quickly. This interim solution provides a stable power foundation, allowing ample time for the complex licensing, construction, and commissioning processes required for advanced nuclear facilities. The long-term vision involves a seamless transition to nuclear power, highlighting a commitment to sustainable and resilient energy solutions.

Several entities are pivotal in this innovative energy transition. Amentum, as the lead, is responsible for the overall development and integration of the project. GE Vernova plays a significant role, likely contributing its expertise in energy generation technologies, including gas turbines and potentially future nuclear components. Oklo, known for its advanced fission power plants, is positioned to deliver the advanced nuclear solutions that will eventually replace or supplement natural gas, ensuring a long-term, carbon-free energy source for the data center. This collaborative effort signifies a forward-thinking approach to powering next-generation AI infrastructure.

The project at the Savannah River Site represents a significant step towards integrating cutting-edge technology with sustainable energy practices. By strategically phasing in natural gas and then advanced nuclear energy, Amentum aims to overcome the traditional challenges associated with large-scale power generation for critical infrastructure. This approach not only ensures operational continuity but also positions the site as a model for future high-demand energy facilities seeking to achieve both efficiency and environmental responsibility.

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